1.Raw material workshop

2.Raw material ingredients

1、Crushing and pre-homogenization

（1）Crushing: In the process of cement production, most of the raw materials have to be crushed, the crushing process is more economical and convenient than the grinding process, and it is very important to reasonably choose crushing equipment and grinding equipment. After crushing, it can reduce the separation phenomenon of different particle size materials in the transportation and storage process, which is helpful to make raw materials with uniform composition and improve the accuracy of batching.
（2）Raw material pre-homogenization: pre-homogenization technology is in the raw material storage and retrieval process, the use of scientific stacking and retrieval technology, to achieve the initial homogenization of raw materials, so that the raw material yard at the same time with the function of storage and homogenization.

3. Lifting into the kiln

4. Kiln discharge and warehousing

2、Raw material preparation
  In the process of cement production, at least 3 tons of materials (including various raw materials, fuels, clinker, mixing materials and gypsum) should be ground for every 1 ton of silicate cement produced. According to statistics, the power consumed by dry process cement production line grinding operation accounts for more than 60% of the power of the whole plant, of which raw material grinding accounts for more than 30%, coal grinding accounts for about 3%, and cement grinding accounts for about 40%. Therefore, it is of great significance to reasonably select grinding equipment and process flow, optimize process parameters, operate correctly and control operation system to ensure product quality and reduce energy consumption.

5. Ball mill

6. Finished product warehouse

3、Homogenization of raw materials
  In the process of cement production, stabilizing the composition of raw materials entering the kiln is a prerequisite for stabilizing the thermal regime of clinker firing, and the raw material homogenization system plays the role of the latter gatekeeper for stabilizing the composition of raw materials entering the kiln.
4、Preheating decomposition
  Preheating and partial decomposition of raw materials by the preheater to complete, instead of rotary kiln part of the function, to shorten the length of the rotary kiln, and at the same time to make the kiln to pile up the state of the gas and material heat transfer process, moved to the preheater in the state of suspension, so that the raw materials with the kiln discharged in the full mix of hot gases, increasing the contact area of the gas and material, fast heat transfer, high heat exchange efficiency, and achieve to improve the kiln system production efficiency, reduce the clinker burning heat consumption of the purpose.

7. Finished product loading

8. Monitoring room

5、 Firing of cement clinker
After the preheating and pre-decomposition of the raw material in the cyclone preheater, the next process is to enter the rotary kiln for clinker firing. After the clinker is fired, the temperature starts to decrease. The cement clinker cooler cools the high-temperature clinker discharged from the rotary kiln to the temperature that the downstream conveying, storage and cement grinding mills can withstand, and at the same time, it recovers the sensible heat of the high-temperature clinker, so as to improve the thermal efficiency of the system and the quality of the clinker.
6、Cement grinding
Cement grinding is a post-process of cement manufacturing and a process that consumes a lot of electricity. Its main function is to grind cement clinker (and cementitious agents, performance adjusting materials, etc.) to a suitable particle size (expressed in terms of fineness, specific surface area, etc.).
7、Cement packaging
Cement is shipped from the factory in both bags and bulk.
 
 

 

 

 

Main process equipment
 

——Single-section hammer crusher
——Vertical or ball milling of raw materials
——Cement preheater
——Cement rotary kiln
——Grate cooler
——stacker
——reclaimer
——dryer
——Cement ball mill
——Cement powder separator
——Cement Packaging Machine
——Dust removal equipment
——Conveying equipment
——burners

 Main economic indicators of cement production line